Laser ultrasonics, especially high frequency laser ultrasonics is a very active forward project in the area of non-destructive testing and its applications in the high pressure physics is in the ascendant too.
In this dissertation,the physical mechanisms of ultrasonic generation by laser pulse, the properties of laser ultrasonics and laser ultrasonics's application in the high pressure physics were briefly introduced.
On the basis of discussing the principles of detecting ultrasonic signals...